Perhaps you should try some spelling variations:
"re communication history" » "re telecommunication history", "re communication sector", "re communication theory", "de communication history", "true communication history", "une communication history"
"mars colonization still" » "mars colonization failed", "mars colonization israel", "mars colonization songs", "mrsa colonization still", "its colonization still", "jews colonization still"
"re cooperation state" » "re cooperation scale", "re operation state", "re cooperation strategy", "de cooperation state", "area cooperation state", "rate cooperation state"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("mars colonization still") or ("re communication history"))) or ("re cooperation state"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mars colonization still") OR ("re communication history"))) OR ("re cooperation state")).
• Removing quotes may allow a broader search: (((( mars colonization still ) or ( re communication history ))) or ( re cooperation state )).
• Adding a wildcard symbol may retrieve word variants: (((("mars colonization still") or ("re communication history"))) or ("re cooperation state"))*.